Height self-adjusting bogie of railway wagon

Abstract

Provided is a height self-adjusting bogie of a railway wagon. The two ends of side frame components of the bogie are arranged on wheel axle components in a bearing mode, height self-adjusting devices are arranged between a swing bolster and the side frame components, each height self-adjusting device comprises a bearing support plate installed on a central square frame through bearing springs, struts are arranged on the two sides of each bearing support plate, each strut is sleeved with a tapper sleeve assembly, a middle support plate is stacked on each bearing support plate, the two sides of the middle support plate are arranged on outer taper sleeves of the tapper sleeve assembly in a sleeved mode respectively, a limiting frame is arranged on the upper portion of the middle support plate, the two sides of the limiting frame are arranged on the struts in a sleeved mode respectively, convex rings are arranged on the bottom face of the limiting frame, through holes are formed in the center of the middle support plate and the center of the bearing support plate respectively, a pull rod is installed in the through holes, the upper end of the pull rod is hinged to the hinge end of a left crank throw and the hinge end of a right crank throw, the free ends of the left crank throw and the free ends of the right crank throw are each provided with upper rolling wheels and lower rolling wheels, limiting rolling shafts are arranged in the middle of the left crank throw and the middle of the right crank throw, a return spring is arranged below the middle support plate, the upper surface of the middle support plate abuts against the lower rolling wheels, the upper rolling wheels abut against the inner surface of the swing bolster, and the swing bolster is arranged on the struts in a sleeving mode. The height self-adjusting bogie of the railway wagon is suitable for railway wagons.

Description

technical field [0001] The invention relates to the field of railway freight car bogies, in particular to a railway freight car self-adjusting bogie. Background technique [0002] At present, heavy load and fast speed are the main directions for the development of railway freight cars. With the continuous improvement of the axle load and operating speed of railway freight cars, the operating conditions of railway freight car bogies are more complicated, and the action force between the wheel and rail is increasing. Wear on wheels and rails. There are two main types of existing bogies: [0003] The first is the frame bogie, which mainly adopts a series axle box suspension system. This kind of bogie has the advantages of small unsprung mass and high critical speed, but the axle weight of this kind of bogie is small, which cannot meet the requirements of modern railways for large axles. The need for heavy bogies, and the height difference between such bogies when empty and he...

AI Technical Summary

Problems solved by technology

[0003] The first is the frame bogie, which mainly adopts the primary axle box suspension system. This type of bogie has the advantages of small unsprung mass and high critical speed, but the axle load of this type of bogie is small, which cannot meet the requirements of modern railways on large axles. The demand for heavy bogies, and the height difference between the empty car and the heavy car of this type of bogie is relatively large, so the coupler height difference between the empty car and the heavy car is likely to cause a coupler fracture accident and affect driving safety;

[0004] The second type is the three-piece bogie, which mainly adopts the central suspension system. This type of bogie has the advantages of heavy axle and low cost, but the height difference between the empty car and the heavy car is relatively large. In this way, the coupler height difference between the empty car and the heavy car is likely to cause a coupler fracture accident, which affects driving safety.

[0005] Therefore, the existing bogies have been difficult to meet the needs, and it is urgent to develop a new type of bogie that can automatically adjust the height.

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